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Highly Selective Ionic Transport through Subnanometer Pores in Polymer Films
Abstract
Novel transport phenomena through nanopores are expected to emerge as their diameters approach subnanometer scales. However, it has been challenging to explore such a regime experimentally. Here, this study reports on polymer subnanometer pores exhibiting unique selective ionic transport. 12 μm long, parallel oriented polymer nanopores are fabricated in polyethylene terephthalate (PET) films by irradiation with GeV heavy ions and subsequent 3 h exposure to UV radiation. These nanopores show ionic transport selectivity spanning more than 6 orders of magnitude: the order of the transport rate is Li+>Na+>K+>Cs+>>Mg 2+>Ca 2+>Ba 2+, and heavy metal ions such as Cd 2+ and anions are blocked. The transport can be switched off with a sharp transition by decreasing the pH value of the electrolyte. Structural measurements and molecular dynamics simulations suggest that the ionic transport is attributed to negatively charged nanopores with pore radii of ≈0.3 nm, and the selectivity is associated with the dehydration effect.
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Cites
SRIM – The stopping and range of ions in matter (2010)
Ziegler, J. F., Ziegler, M. D., & Biersack, J. P. (2010) · Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms · doi:10.1016/j.nimb.2010.02.091 · Cited by 11,412
Cited by
Design principles of ion selective nanostructured membranes for the extraction of lithium ions
Razmjou, A., Asadnia, M., Hosseini, E., Habibnejad Korayem, A., & Chen, V. (2019) · Nature Communications · doi:10.1038/s41467-019-13648-7 · Cited by 616
Extraction of lithium from Chinese salt-lake brines by membranes: Design and practice
Xu, S., Song, J., Bi, Q., Chen, Q., Zhang, W.-M., Qian, Z., Zhang, L., Xu, S., Tang, N., & He, T. (2021) · Journal of Membrane Science · doi:10.1016/j.memsci.2021.119441 · Cited by 462
Zhao, Y., Tong, T., Wang, X., Lin, S., Reid, E. M., & Chen, Y. (2021) · Environmental Science & Technology · doi:10.1021/acs.est.0c04593 · Cited by 363
Lithium ion-selective membrane with 2D subnanometer channels
Razmjou, A., Eshaghi, G., Orooji, Y., Hosseini, E., Korayem, A. H., Mohagheghian, F., Boroumand, Y., Noorbakhsh, A., Asadnia, M., & Chen, V. (2019) · Water Research · doi:10.1016/j.watres.2019.05.018 · Cited by 223
Metadata
- Authors
- Wen, Q., Yan, D., Liu, F., Wang, M., Ling, Y., Wang, P., Kluth, P., Schauries, D., Trautmann, C., Apel, P., Guo, W., Xiao, G., Liu, J., Xue, J., & Wang, Y.
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2016-07
- Volume
- 26
- Issue
- 32
- Pages
- 5796-5803
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- OpenAlex
- W2461785295
- Cited by
- 251
- References
- 1
- FWCI
- 6.38
- Type
- journal article
- Language
- en
- Open access
- closed
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- Wen, Q., Yan, D., Liu, F., Wang, M., Ling, Y., Wang, P., Kluth, P., Schauries, D., Trautmann, C., Apel, P., Guo, W., Xiao, G., Liu, J., Xue, J., & Wang, Y. (2016). Highly Selective Ionic Transport through Subnanometer Pores in Polymer Films. Advanced Functional Materials. https://doi.org/10.1002/adfm.201601689
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